In breve
- CVE-2026-33046 è una vulnerabilità ALTO (CVSS 8.8) che riguarda indico, indico (cern).
- Probabilità di sfruttamento nei prossimi 30 giorni (EPSS): 0.80%, superiore al 56.5% delle vulnerabilità.
- Correzione: aggiornare a 3.3.12 o successiva.
| Package | Affected versions | Patched versions |
|---|
| indico PyPI | < 3.3.12
| 3.3.12
|
| indico | < 3.3.12
| 3.3.12
|
Description
[!NOTE]
If server-side LaTeX rendering is not in use (ie XELATEX_PATH was not set in indico.conf), this vulnerability does not apply.
Impact
Due to vulnerabilities in TeXLive and obscure LaTeX syntax that allowed circumventing Indico's LaTeX sanitizer, it is possible to use specially-crafted LaTeX snippets which can read local files or execute code with the privileges of the user running Indico on the server.
Patches
It is recommended to update to Indico 3.3.12 as soon as possible.
See the docs for instructions on how to update.
It is also strongly recommended to enable the containerized LaTeX renderer (using podman), which isolates it from the rest of the system. See the docs for details - it is very easy and from now on the only recommended/supported way of using LaTeX.
Workarounds
Remove the XELATEX_PATH setting from indico.conf (or comment it out or set it to None) and restart the indico-uwsgi and indico-celery services to disable LaTeX functionality.
For more information
For any questions or comments about this advisory:
NVD description
Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. In versions prior to 3.3.12, due to vulnerabilities in TeXLive and obscure LaTeX syntax that allowed circumventing Indico's LaTeX sanitizer, it is possible to use specially-crafted LaTeX snippets which can read local files or execute code with the privileges of the user running Indico on the server. Note that if server-side LaTeX rendering is not in use (ie `XELATEX_PATH` was not set in `indico.conf`), this vulnerability does not apply. It is recommended to update to Indico 3.3.12 as soon as possible. It is also strongly recommended to enable the containerized LaTeX renderer (using `podman`), which isolates it from the rest of the system. As a workaround, remove the `XELATEX_PATH` setting from `indico.conf` (or comment it out or set it to `None`) and restart the `indico-uwsgi` and `indico-celery` services to disable LaTeX functionality.
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